getOrderedSeriesList<S extends ImmutableSeries<D> >  method 
- @protected
- List<S> seriesList
inherited
    Gets the iterator for the series based grouped/stacked and orientation.
For vertical stacked bars:
- If grouped, return the iterator that keeps the category order but reverse the order of the series so the first series is on the top of the stack.
- Otherwise, return iterator of the reversed list
All other types, use the in order iterator.
Implementation
@protected
Iterable<S> getOrderedSeriesList<S extends ImmutableSeries<D>>(
  List<S> seriesList,
) =>
    (renderingVertically && config.stacked)
        ? config.grouped
            ? _ReversedSeriesIterable(seriesList)
            : seriesList.reversed
        : seriesList;